我用 ubuntu 20.04 有几个月了，感觉还不错。最近买了个新的 E-ink 显示器，型号是 Dasung 的“Paperlike HD”，分辨率是 2200*1650（4:3）。但是当我把它连接到电脑上时，Ubuntu 20.04 没有合适的分辨率。
如果我使用默认的2200×1650，显示器可以正常显示，但对于13.3英寸的屏幕来说，分辨率太高了，所有字体和图标都非常小，而且图像看起来有点不稳定。如果我切换到其他4：3分辨率，比如1600×1200或1280×1024，显示没问题，但只有屏幕中间部分可以显示内容，图像不会自动拉伸填满整个屏幕。
在 Windows 7 下我没有遇到这个问题，因为我可以在 AMD 催化剂实用程序中设置填满屏幕的选项，但我不知道在 Ubuntu 20.04 下是否有类似的方法，并且显示器本身没有设置缩放图像的菜单，有人可以为我提供一些建议吗？非常感谢。
这是 xrander 的输出消息：
sunjar@Ubuntu360:~$ xrandr
Screen 0: minimum 320 x 200, current 2880 x 1200, maximum 16384 x 16384
DVI-D-1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
1280x1024 60.02 + 75.02*
1280x960 60.00
1280x800 59.99 59.97 59.81 59.91
1152x864 75.00 75.00 70.00 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 75.05 60.04 75.03 70.07 60.00
960x720 75.00 60.00
928x696 75.00 60.05
896x672 75.05 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
832x624 74.55
960x540 59.96 59.99 59.63 59.82
800x600 75.00 70.00 65.00 60.00 72.19 75.00 60.32 56.25
840x525 74.96 69.88 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 74.76 70.06 59.98
800x450 59.95 59.82
640x512 75.02 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 75.00 72.81 75.00 66.67 59.94
720x405 59.51 58.99
720x400 70.08
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 75.00 75.00 70.00 60.06
640x360 59.86 59.83 59.84 59.32
512x384 75.03 70.07 60.00
512x288 60.00 59.92
416x312 74.66
480x270 59.63 59.82
400x300 72.19 75.12 60.32 56.34
432x243 59.92 59.57
320x240 72.81 75.00 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1 connected 1600x1200+1280+0 (normal left inverted right x axis y axis) 200mm x 150mm
2200x1650 40.00 +
2048x1536 60.00
1920x1440 60.00
1856x1392 60.01
1792x1344 60.01
2048x1152 59.99 59.98 59.90 59.91
1920x1200 59.88 59.95
1920x1080 60.01 59.97 59.96 59.93
1600x1200 60.00*
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
VGA-1 disconnected (normal left inverted right x axis y axis)
我尝试使用这个，但是没有用。
sunjar@Ubuntu360:~$xrandr --output HDMI1 --fbmm 280x215
答案1
您是否尝试过从系统设置中更改比例因子？...
